525557131 has 8 divisors (see below), whose sum is σ = 574190064. Its totient is φ = 477066720.

The previous prime is 525557129. The next prime is 525557173. The reversal of 525557131 is 131755525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525557131 - 2¹ = 525557129 is a prime.

It is a super-2 number, since 2×525557131² = 552420595889902322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525557231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27840 + ... + 42733.

It is an arithmetic number, because the mean of its divisors is an integer number (71773758).

Almost surely, 2^525557131 is an apocalyptic number.

525557131 is a deficient number, since it is larger than the sum of its proper divisors (48632933).

525557131 is a wasteful number, since it uses less digits than its factorization.

525557131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71261.

The product of its digits is 26250, while the sum is 34.

The square root of 525557131 is about 22925.0328462142. The cubic root of 525557131 is about 806.9995843881. Note that the first 3 decimals are identical.

The spelling of 525557131 in words is "five hundred twenty-five million, five hundred fifty-seven thousand, one hundred thirty-one".